import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import WelCome from '../components/WelCome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
Vue.use(VueRouter)


const router = new VueRouter({
        routes: [
            { path: '/', redirect: '/login' },
            { path: '/login', component: Login },
            {
                path: '/home',
                component: Home,
                redirect: '/welcome',
                children: [{
                    path: '/welcome',
                    component: WelCome
                }, {
                    path: '/users',
                    component: Users
                }, {
                    path: '/rights',
                    component: Rights
                }, {
                    path: '/roles',
                    component: Roles
                }, {
                    path: '/categories',
                    component: Cate
                }]
            }
        ]
    })
    // 挂载路由导航守卫
router.beforeEach((to, from, next) => {
    // to 将要访问的路径
    // from 代表从哪个路径跳转而来
    // next 是一个函数， 表示放行
    //      next（） 放行， next（'/login'）强制跳转
    if (to.path == '/login') return next();
    // 获取token
    const tokenStr = window.sessionStorage.getItem('token');
    if (!tokenStr) return next('/login');
    next();

})
export default router